---
cve: "CVE-2025-59719"
severity: "CRITICAL"
cvss: 9.1
epss: "25.1%"
vendor: "Fortinet"
kev: false
exploited: true
published: "2025-12-09 18:15:55"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T13:03:19+02:00"
---

# CVE-2025-59719

> 9.1 CRITICAL · 🔓 Exploited

## Beschreibung

An improper verification of cryptographic signature vulnerability in Fortinet FortiWeb 8.0.0, FortiWeb 7.6.0 through 7.6.4, FortiWeb 7.4.0 through 7.4.9 may allow an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML response message.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://fortiguard.fortinet.com/psirt/FG-IR-25-647>
- <https://cert-portal.siemens.com/productcert/html/ssa-864900.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-59719) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_